An 8.9 magnitude earthquake and tsunami hit Japan Friday afternoon, causing concern for web hosts who have set up data centres in Tokyo to meet demand for cloud computing services,. While it is still unclear how data centers have been affected, ZDNet Japan has been posting the availability as the information becomes available.

The report says that NTT Communications "appears to be the hardest hit" and has lost its IP-VPN connection. In a statement, NTT says the earthquake in the Tohoku region has failed some of its services. ZDNet says Amazon Web Services still has services in its Tokyo data center, and Salesforce.com has indicated its Japan and Asian Pacific instances are up.